Compensating holding down and supporting bar



March 30 1926. 1,578,756

' E. V'. PRENTICE GOMPENSATING HOLDING DOWNAND SUPPORTING BAR Filed May 16 1925 l I I I I I I l a: a E ii! I I II n I I I I I I H I I I L I I I 5 I //7|/e/1 /'or Edward 1 Wen/ice ml 23 /1]: I

Patented Mar. '30; 192

oorrrrinsmms-rfonmws Down A-wnsorrow-rue 13am Application file'd May 16, 1925 Serial No'; 30 839.

To all whom it may aono'em:

Beit known that I, EDWARD V. PnnN'rIon, a citizen of the United States, residing at Portland,- inthe county ofMultnoinah and State of- Oregon,; and having my post-ofiice address at 1615 Fiske Street, insaid city and State, have invented' a new and useful Improvement in a Compensating Holding flown and Supporting: Bar, of which the following is a specification. I

My invention relates to an improvement in agcolnpensating holding down and supporting bar, for use'i'n dry kilns, and is especially useful where dehydrating processes are being carried on and where a compensating support is necessary to compensate for the shrinkage that occurs, as the dehydration process is carried can A further object of invention consists in new, novel and eta for the compensating for the shrinkage occurs wherein. the supporting bar is madeupol a multiplicity of individual unit contacting surfaces, w1iieh lie in the same or parallel lanes the same bei'n mounted u on a core bar, adapted to maintain the individual units in slidable relationship with' the core bar. A further object of; invention consists in means for normally maintaining: the in 1 dividual' units in spaced relationship with each other and spread apart by compressible spreading means; as coil springs.-

A fuirther ol'vject of; my invention consists in the individual units being mounted upon a. core bar,l adapted to=theprerention oi" the individual units rotating thereahout and having; a. suitable seat provided in the ends thereof to properly niaintain a coil spring therein. I p A. further object of my invention consists inza roller support heing' adapted to the in: diiu'dii'al unitsupon the lowerl ay'er for contacting \vijththe primary supporting base.

I-Ieretofore in many drying operations; as clay productswhere: a baking orl drying: process is carried on and more especially in the' dehydrating of" veneers; previously made into panel's, wherein the same are piled in considerable heights, a tendency of the lower strata of the panels to pull apart due to the superimposed load, due to the rapid shrinking of the material being dehydrated V a device of this character becomes necessary,

to compensate for the shrinkage y mven uen is mtencled as a eempensat mg and spreader means to prevent t was tendency upon the part of niaterialbeing processed;

I With these'anjd incidental obf cts in View, the invention consists in cert-ain;:,novel :Eea- 'tures of construction and -coinbi-n-at-;i*on of parts,- the essential elements of which are set forth in the appended; claims and; to a preferred form ofvembo diment of which is hereinafter shown with reference to the drawings which accompany and-form a part ofthis specification. In e d n 1* Fig. l is aside elevation of a supporting track anda supporting carriage placed thereupon, having superimposed. a stratified load of material to be placed within the kiln for the kiln drying ofi the same; and the dehydrating qfi the product. I I I Fig. 2 is arragl-nen-tary erossj section view, made somewhat enlargedfornr t0 illns trate thfeappli-oa-tion of device-.5 'F1g. 3 is a fragmentary, side, elevation oyf a partial un i-'t,,made' on an enlargedscale to show therelationship ofthe individual units,- mounted upon the core bar; and a means for maintaining the same in spacedrelationship upon the core bar. k v y F 4 is a fragmentary side elevation; partially in section; made to i-ll ustrate' the.

removed from the SJOI'G; bar, and illustrating I a roller support placed thereunder for con; tacting' with the base support of the carriao'e'up'on which theload is placed. I

7 is aplan, bottom View of the mechanism shown inFig. 6 and more particularly made to illustrate the roller" sii-pport placed;thereunder.

die reference characters refer to like parts throughout the several views.

1 is a supporting track having a carriage 2, disposed thereupon and contactingwith the track through wheel supports 3. necessity the carriage platform 2, is made of rigid material which ma have metallic 'intjal covering 4 disposed upon the upper suit-face of the seine east. 1: have found will 7' contacts with a surface of this kind, I have found that more satisfactory results may be obtained where a roller surface is maintained between the compensating bar and the platform structure.

A non-circular core bar 5, is supplied of the approximate width of the plaftorni 2, havingdisposed thereupon units 6, having disposed therein an opening adapted to the passage of the core bar therethrough that prevents the rotation of the units 6 therearound, held in spaced relationship with each other by compression spring 7, adapted to seat within the individual units by a seating groove 8, disposed within the end of the unit and about the corebar.

Because of the necessityof having different strata of the materialbeing maintained through its transverse length, these bars are cut at a diagonal angle to that of the center line of the core bar, so that the same will contact with the contacting surfaces of the individual units continuously through the transverse length of the material being supported.

A pin stop 9, is disposed in the outer ends of the core bar against which the outer unit composing the compensating bar contacts when in the distended position, and as the material for support shrinks, due to the dehydrating effect, the individual units, composing compensating bar will move inwardly upon the core bar.

To further facilitate the movement of the lower bar upon the platform, I have provided a roller 10, supported upon a suitable journal 11, as shown in. Fig. 7, and wherein the roller is almost entirely housed within the base of the individual unit and central of its ends, A metal plate 12, may be disposed upon thc platform upon which the lower bar rests and upon which the roller engages. 7

While the form of mechanism herein shown and described is admirably adapted to fulfill the objects primarily stated, it is to be understood that'it is not intended to con fine the invention to the one form of embodiment herein shown and described, as it is susceptible of embodiment in various forms all coming within the scope of the claims which follow:

hat 1 claim is y 1. A compensating holding down and supporting bar, comprising a core bar, stops disposed at either end of the bar, individual compensating units disposed upon the core bar adapted to having their contacting surfaces lie in the same and parallel planes, a

compression spring seated Within the adjacent ends of the individual units and adapted to normally maintain the individual compensating units in spaced relationship with each other.

2. A compensating holding down and supporting bar comprising, a core bar, individual compensating units mounted upon the bar, a stop pin located at either end of the supporting bar, and adapted to maintain the individual spaced units therebetween and means for normally maintaining the individual units in spaced relationship,

8. A compensating holding down and supporting bar comprising, a core bar, individual compensating units, mounted upon the bar, normally spaced apart and means disposed in the lower contacting surface of the bar to reduce the friction between the bar and the supporting platform.

4. A compensating holding down and supporting bar, co'mprisinga core bar, individual compensating units, mounted upon the bar, and normally spaced apart by a compressible spring seated in adjacent ends of the individual compensating units and roller supporting means journaled within the base of the individual compensating units composing the bar. V

5. A compensating holding down and sup-. porting bar, comprising a core bar, individual compensating units, each forming a para-llelogram mounted upon the core bar, com

pressible spring means adapted to maintain the individual compensating units in spaced relationship upon the bar, locking pins dis posed at either end of the core bar, adapted to maintain the individual. con'lpensating units upon the bar, and roller supporting means ournaled within the base of the individual compensating units.

EDWARD V. PRENJTICE. 

